class  BankAccount:
    bank_name = "农业银行"
    def __init__(self,account_name,balance):
        print("对象初始化")
        self.name = account_name
        self.balance = balance
    def deposit(amount):
        cun = input("请输入存款金额:")
        amount = cun + amount
        print(amount)
    def withdraw(amount):
        qu = input("请输入存款金额:")
        amount = amount - qu
        print(amount)
    def display(amount):
        print(amount)